Is the Ubiquitous Token of a plane something we should expect from visit to visit? Like, how Capenna has its gw citizens, Innistrad has black decayed zombies, LTR had orc armies [applicable to some silmarillion-based visit, I guess]I was looking at the Fish tokens in Bloomburrow and Mercenaries in otj and wondering if those were also more Worldbuilding statements or not.

It’s a mechanical tool that adds flavor, and something we definitely use when shaping a set.

God-Eternal Oketra, a white card, makes black zombies with vigilance, so it's not unprecedented for some tokens to have abilities that don't match their colors.

We have plenty of cards that make tokens of a different color. I was saying that whatever that token does it needs to be in color pie for the color that created it.For example, white could make a 1/1 black creature with flying because white has access to flying, but it couldn’t make a black 1/1 with deathtouch because white doesn’t have access to deathtouch.

How do you cost vanilla creatures on a flat power level? Often their quality is determinde by their cost. See Walking Corpse vs. Scathe Zombies as an example. Do you just go for the most likely?

They’re costed on curve.

As a now (again) casual player who was heavily invested in Standard during the reign of Zendikar, I am curious how one can go from Mindless Null (strictly worse than Scathe Zombies) to Walking Corpse (strictly better). More to the point, why does Mindless Null exist? I think it was the most frustrating card to ever pull, even in Limited where I saw it the most. This question is inspired by the comic you made (which I loved!) comparing Walking Corpse to Scathe Zombies.

Magic (and trading card game really) will have cards ebb and flow meaning there will always be “strictly better” cards and “strictly worse” cards. The fact that Mindless Null was still playable in its limited format shows that TCGs can handle power fluxuation.